Klemm Bohrtechnik
pic 102 are two of the hydraulic MCV that are digital/electric over hydraulic
pic 128 are the Remote controls to move the spools in the MCV via digital CANN buss
pic 026 is the tie-back machine crawler that the aforementioned controls are on.
They control 5 hydraulic pumps that run 4-5,000 psi. The two main pumps are for tramming/tracking
and running the drifter/rotary in the back and a rotary head for driving casing in the front.
The other three are lower volume but still HP pumps at over 250bar.
Three are load sensing pumps and two are gear pumps hooked to a load sensing MCV.
They control the FEED pushing and extraction of casing and drill steal.
A drifter is a HAMMER that is controlled by frequency and stroke coupled to a powerful rotary section.
These same machines can bore and core an existing column like the San Rafael bridge retrofit.
40 meters within .250 top to bottom and within .250 from the outside of the steel reinforced old column
That is a different attachment.
Everyone is custom built for that customer and brother they require maintenance 3 time a day.
Cost per depending on the size of the machine and drive system (electric or Diesel) 225-650,000 USD in 2018
They can pay for every part of a job and pay a crew of 5 140-250K each per year and pay for the machine in less than a
2080 hr year. They usually work 10-14 hr shifts. Maintenance is 3 times a day. Repaires (if needed) 10-14 hr per day.
Theses machined can last 10,000 hours and be reconditioned to last another 10,000.
They did make up to 10 -15 times their cost NET, depending on the operator and the crews attention to detail
Yes I did install a stereo in a few Bauer cab machines. 24VDC
They are my favorite as far as technical innovation, digital precision (compared to 25 years before). Twice the production
25% reduction in fuel consumption and TIER 4.
The most difficult load possible will still only visually produce a huge expulsion of HEAT out of the exhaust, NO SMOKE.
The engine warms up in 1 minute above 35 degrees and 2 minutes for below 35 degrees F. 5 minutes for hydraulic oil
warm up.
100 hours for complete break-in and retightening every external hex, (over 5000 checks.)
The 100 hour service is a 2 person 16-24 hours total. Except the hydraulic oil every box, final drive, engine oil is drained and samples taken.
I've done a lot less maintenance on aircraft.
A large drifter can cost 110k the one on the rear of that machine was 75,000 usd at the time, NEW.
Drilling or breaking a hole deep is one thing, getting your drill string BACK is another.
Vertical large bore machines 1-3 meters wide X 20-30 meters deep X 5-30 aren't uncommon for anchors at terminal end of a bridge.
Tunnel boring, trench cutters are a whole different story, BUT just a conglomeration of several hydraulic circuits doing different things.
And people think stereo gear is difficult to understand. That orange BOX if you only knew how many processors are joined by that buss alone.
That same MCV in analog had 80 addition 1/4" 2000 psi hoses hooked to them vs 2 wire digital CRC. That remote control arm was full with remote
hosing vs CRC 2 wire. Every single remote had at least 1/2 dozen pots for ramps. Amazing to watch one work and flushing.
It's the dirtiest job on earth. Head to toe grout in rain gear every day. Chuck tenders, don't mess with those guys LOL. Hercules would stand
a better chance.
I kid you NOT they use directional fuses for the GPS/PIN point 5-24dvc cabling. XYZ .250 location. The first place I saw it. It was made by
a german company 25 years + ago. They didn't go bad often but they did fail. Bussmaster?
BTW pic 149 is a VOLVO diesel in the same chassis Deutz, both inline 6 cylinder TIER 4 with dual turbo and after burners.